Means for utilizing the residual heat of coke produced in vertical gas-retorts.



H. J. TOOGOOD.

MEANS FOR UTILIZING THE RESIDUAL HEAT 0F 00KB PROD IN VERTIOAL GAS RETORTS. APPLICATION FILED JUNE 25, 19

1,101,477, Patented June 23, 1914.

- 16 15 fig 20 20 31 5m z ye rn M 4&1 Ma 1/ f UNITED STATES PATENT OFFICE.

HERBERT JOHN TOOGOOD, 0F ELIiAND, ENGLAND, ASSIGNOR TO ROBERT DEMPSTEB &

' SONS, LIMITED,'OF ELLAN'D, ENGLAND.

MEANS FOR UTILIZING THE RESIDUAE HEAT 0]? COKE PRODUCED IN VERTICAL cas-iimon'rs.

Patented June 23, 1914.

Application filed'June 25,1912. Serial No. 705,776.

known methods of charging vertical re'torts,

namely :-1. Intermittent, in which the whole charge is fed in at once and all emptied several hours afterward (say l2-hours)-. Continuous, in which coke is continuously withdrawn at the bottom and coal continuously enters at the tops 3. Semi-intermittent, in which every 3 or 4 hours a portion of the charge, say one third, is withdrawn, and fresh coal immediately added at the top :first partial withdrawal the method has inost of the characteristicso'f the continuous recess. 4. Semi-continuous, in. which coke 1s continuously withdrawn at @he bottom, but coal is intermittently fed at the top, say whenever about one-fourth of the charge has been withdrawn. This last method is open ,to the objection that a gradually increasing space is left nil-utilized at thetop of the retort, until jiist before another ,pm-tia'lcharge v is due the gas evolved lower'gdown is dam- 9. ed by having to pass through a large zone 0% radiant heat (instead ofegiijiduct'e The two latter methods (3 aiid 4;) are .sometimes. included in the expression semi-continuous but the present invention onl ap plies to methods 2 and 4.

This invention relates to gas vretorts of the type-known as continuous or semi-conunuous and its objects are to cool the coke and to utilize as fully as possible the residual heat therein.

'After the lowerportion of the. charge has beeniuliycarbonized, the resultant coke is of course at a high temperature, in fact much too hot to be dealt with by automatic extracting mechanism, and therefore requires to be cooled. It is desirable to'recover the residual heat from the coke and return it to the setting, andaccordingto this invention the following apparatus is employed for this purpose:-Flues are arranged to inclosethe retort extensions con-- heat?) taining the coke, through whicln ii'ues primary air is circulated, and a watcrgdrip is arranged in connection'with such The water being evaporated the air is =ftiius caused to contain steam in definitepr, or-

ti'ons, these being regulated "li v 7 the water pipe, so as to insure a ous mi r'tureof air and'steani throughout their entire volume, each being in qua-n5 tity .best suited to theabs'orptlon cf heatby this mixture from the coke, afthe residual heat of the latter being utilize'dl'i'n the water to steam, in facilitating its thorough intermingling .with the p'r-unafry .air and in heating the resultantygaseou'sflrnixture. The temperature of 250C. will usually be about that to which said atture is thus subjected and the regulation o the supply of water as stated isto provide 'tlieggreatair supplied wi-ll carry as a homogeneous gaseous mixture, butgno more. than such quantity. The air and steam beill thor- Ough'ly mixed and pre-heated :are -l "jtoithe producer. The cooling effect on coke.

thus obtained, even considering the latent heat in the waterwhen so vaporized, might not be sufficient to extract the iiheatfililmrefrom, especially in the center o'fy'th'efmass;

may therefore employ .a-U gtubezoriother cor before passingto the regeneraitoqand where the secondary air is so heated, fit as passed :in

the opposite direction to the primary air,

so as to cool each retort extension to the same degree. The above flu'es will extract as much heat as can be profitably utilized in the setting, but to further cool thecoke {and cause it to contract, so as to facilitate its handling by the discharging mechanism, I may employ a third chamber, connected to the main flue and provided with a damper. By these means cold air would'be circulated and the discharging mechanism assisted *in doing its work.

In the accompanying drawingsthe figure is a vertical section through the mouthpiece of a retort. v

In the figure the reference numeral 2 inmagma est quantity of steam which the vohiiiieo'f dicates the retort, 16 a downward extension thereof, 28 the discharging mouthpiece, 33 a discharging device. cThe; extension 1'6 ,:i s wholly or 'rpl alntiallysurrounded by .flues I15 5 and The extension 16 of the retorts' passing through these flues may if desirable be; rovided with ribs to 7 increase their "cons tact surfaces. The primary air entersthe flue, 20, and proceeds, to .the producer .IThe; secondary air passes through thefined-5; the regenerator, which may be of any suitvid'e'dffor heating water or producing steam,j the water being fedinto this chamher"'30- through the pipe 31. The pipe 31 ,may also feed the flue 2O forproducingjpteam in con: nection withthe primary air. The. 'ipe for giving a water' drip on' the coke be ore charge-is shown at 32.

- am aware that. 1t s not orseparately before applying theni to the retort; also that steam: has sometimes, been admittedi vvithn the prirharyf'air to the projdimer; and therefore donut-broadly claini the-same.

2 What 1 doclaim" and to :secure f Letters Patent- :1;- In a -"setting containingafpluralitj 0f continuously operated vert1 'ca lf ga s'jretorts, eae'h' having a" downward extension oonf- Teach having ra y n l t hea't primary air -and' secondary air together.

structed to contain hot coke the combination with aflue inclosing such downward extensio'ns having a suitable outlet, and means for supplying air to such flue, of a regulatable jyqater'drip device situated n such flue and in tions of such downward extensions an pro- ;yided with a water drip device, "of asec- "ondary air flue inclosing other portions of Esuch downward extensions and in which the fair current is assed in the-direction -oppo-- site to that of t e air current in the said primary air fluesfiin orderto cool each retort extension to the same extent, meansfor supplying air to the separate fines, and an outlet for the heated air.

P I test mony whereof, I have signed name'to this specification-in thepresencqpf twosubscribing'witnesses; I I v HERBERT JOHH TQQGQQD Witnesses IEnNEs'r Pmas'rnax .NEWTON,--; I JAMES Lasma Wnikmsoli, 

